!   
!                Parallel Sparse BLAS  version 3.5
!      (C) Copyright 2006, 2010, 2015, 2017
!        Salvatore Filippone    Cranfield University
!        Alfredo Buttari        CNRS-IRIT, Toulouse
!   
!    Redistribution and use in source and binary forms, with or without
!    modification, are permitted provided that the following conditions
!    are met:
!      1. Redistributions of source code must retain the above copyright
!         notice, this list of conditions and the following disclaimer.
!      2. Redistributions in binary form must reproduce the above copyright
!         notice, this list of conditions, and the following disclaimer in the
!         documentation and/or other materials provided with the distribution.
!      3. The name of the PSBLAS group or the names of its contributors may
!         not be used to endorse or promote products derived from this
!         software without specific written permission.
!   
!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
!    POSSIBILITY OF SUCH DAMAGE.
!   
!    
!
!  c_mat_impl:
!   implementation of the outer matrix methods.
!   Most of the methods rely on the STATE design pattern:
!   the inner class(psb_c_base_sparse_mat) is responsbile
!   for actually executing the method.
!
!
!



! == ===================================
!
!
!
! Setters 
!
!
!
!
!
!
! == ===================================


subroutine  psb_c_set_nrows(m,a) 
  use psb_c_mat_mod, psb_protect_name => psb_c_set_nrows
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  integer(psb_ipk_), intent(in) :: m
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='set_nrows'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%set_nrows(m)

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_set_nrows


subroutine  psb_c_set_ncols(n,a) 
  use psb_c_mat_mod, psb_protect_name => psb_c_set_ncols
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  integer(psb_ipk_), intent(in) :: n
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='get_nzeros'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  call a%a%set_ncols(n)

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_set_ncols



!
!  Valid values for DUPL: 
!  psb_dupl_ovwrt_ 
!  psb_dupl_add_   
!  psb_dupl_err_   
!

subroutine  psb_c_set_dupl(n,a) 
  use psb_c_mat_mod, psb_protect_name => psb_c_set_dupl
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  integer(psb_ipk_), intent(in) :: n
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='get_nzeros'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%set_dupl(n)

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_set_dupl


!
! Set the STATE of the internal matrix object
!

subroutine  psb_c_set_null(a) 
  use psb_c_mat_mod, psb_protect_name => psb_c_set_null
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='get_nzeros'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%set_null()

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_set_null


subroutine  psb_c_set_bld(a) 
  use psb_c_mat_mod, psb_protect_name => psb_c_set_bld
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='get_nzeros'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%set_bld()

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_set_bld


subroutine  psb_c_set_upd(a) 
  use psb_c_mat_mod, psb_protect_name => psb_c_set_upd
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='get_nzeros'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%set_upd()

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return


end subroutine psb_c_set_upd


subroutine  psb_c_set_asb(a) 
  use psb_c_mat_mod, psb_protect_name => psb_c_set_asb
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='get_nzeros'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%set_asb()

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_set_asb


subroutine psb_c_set_sorted(a,val) 
  use psb_c_mat_mod, psb_protect_name => psb_c_set_sorted
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  logical, intent(in), optional :: val
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='get_nzeros'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%set_sorted(val)

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_set_sorted


subroutine psb_c_set_triangle(a,val) 
  use psb_c_mat_mod, psb_protect_name => psb_c_set_triangle
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  logical, intent(in), optional :: val
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='get_nzeros'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%set_triangle(val)

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_set_triangle


subroutine psb_c_set_unit(a,val) 
  use psb_c_mat_mod, psb_protect_name => psb_c_set_unit
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  logical, intent(in), optional :: val
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='get_nzeros'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%set_unit(val)

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_set_unit


subroutine psb_c_set_lower(a,val) 
  use psb_c_mat_mod, psb_protect_name => psb_c_set_lower
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  logical, intent(in), optional :: val
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='get_nzeros'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%set_lower(val)

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_set_lower


subroutine psb_c_set_upper(a,val) 
  use psb_c_mat_mod, psb_protect_name => psb_c_set_upper
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  logical, intent(in), optional :: val
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='get_nzeros'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%set_upper(val)

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_set_upper



! == ===================================
!
!
!
! Data management
!
!
!
!
!
! == ===================================  


subroutine psb_c_sparse_print(iout,a,iv,head,ivr,ivc)
  use psb_c_mat_mod, psb_protect_name => psb_c_sparse_print
  use psb_error_mod
  implicit none 

  integer(psb_ipk_), intent(in)               :: iout
  class(psb_cspmat_type), intent(in) :: a   
  integer(psb_ipk_), intent(in), optional     :: iv(:)
  character(len=*), optional        :: head
  integer(psb_ipk_), intent(in), optional     :: ivr(:), ivc(:)

  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='sparse_print'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_get_erraction(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%print(iout,iv,head,ivr,ivc)

  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_sparse_print


subroutine psb_c_n_sparse_print(fname,a,iv,head,ivr,ivc)
  use psb_c_mat_mod, psb_protect_name => psb_c_n_sparse_print
  use psb_error_mod
  implicit none 

  character(len=*), intent(in)  :: fname   
  class(psb_cspmat_type), intent(in) :: a   
  integer(psb_ipk_), intent(in), optional     :: iv(:)
  character(len=*), optional        :: head
  integer(psb_ipk_), intent(in), optional     :: ivr(:), ivc(:)

  integer(psb_ipk_) :: err_act, info, iout
  logical :: isopen
  character(len=20)  :: name='sparse_print'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_get_erraction(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  iout = max(psb_inp_unit,psb_err_unit,psb_out_unit) + 1
  do 
    inquire(unit=iout, opened=isopen)
    if (.not.isopen) exit
    iout = iout + 1
    if (iout > 99) exit
  end do
  if (iout > 99) then 
    write(psb_err_unit,*) 'Error: could not find a free unit for I/O'
    return
  end if
  open(iout,file=fname,iostat=info)
  if (info == psb_success_) then 
    call a%a%print(iout,iv,head,ivr,ivc)
    close(iout)
  else
    write(psb_err_unit,*) 'Error: could not open ',fname,' for output'
  end if

  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_n_sparse_print


subroutine psb_c_get_neigh(a,idx,neigh,n,info,lev)
  use psb_c_mat_mod, psb_protect_name => psb_c_get_neigh
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(in) :: a   
  integer(psb_ipk_), intent(in)                :: idx 
  integer(psb_ipk_), intent(out)               :: n   
  integer(psb_ipk_), allocatable, intent(out)  :: neigh(:)
  integer(psb_ipk_), intent(out)               :: info
  integer(psb_ipk_), optional, intent(in)      :: lev 

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='get_neigh'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%get_neigh(idx,neigh,n,info,lev)

  if (info /= psb_success_) goto 9999

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_get_neigh



subroutine psb_c_csall(nr,nc,a,info,nz) 
  use psb_c_mat_mod, psb_protect_name => psb_c_csall
  use psb_c_base_mat_mod
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  integer(psb_ipk_), intent(in)             :: nr,nc
  integer(psb_ipk_), intent(out)            :: info
  integer(psb_ipk_), intent(in), optional   :: nz

  integer(psb_ipk_) :: err_act 
  character(len=20)  :: name='csall'
  logical, parameter :: debug=.false.

  call psb_get_erraction(err_act)

  call a%free()

  info = psb_success_
  allocate(psb_c_coo_sparse_mat :: a%a, stat=info)
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_ 
    call psb_errpush(info, name)
    goto 9999
  end if
  call a%a%allocate(nr,nc,nz)
  call a%set_bld() 

  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_csall


subroutine  psb_c_reallocate_nz(nz,a) 
  use psb_c_mat_mod, psb_protect_name => psb_c_reallocate_nz
  use psb_error_mod
  implicit none 
  integer(psb_ipk_), intent(in) :: nz
  class(psb_cspmat_type), intent(inout) :: a
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='reallocate_nz'
  logical, parameter :: debug=.false.

  call psb_get_erraction(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%reallocate(nz)

  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_reallocate_nz


subroutine  psb_c_free(a) 
  use psb_c_mat_mod, psb_protect_name => psb_c_free
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a

  if (allocated(a%a)) then 
    call a%a%free()
    deallocate(a%a) 
  endif

end subroutine psb_c_free


subroutine  psb_c_trim(a) 
  use psb_c_mat_mod, psb_protect_name => psb_c_trim
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='trim'
  logical, parameter :: debug=.false.

  call psb_get_erraction(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%trim()

  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_trim



subroutine psb_c_csput_a(nz,ia,ja,val,a,imin,imax,jmin,jmax,info,gtl) 
  use psb_c_mat_mod, psb_protect_name => psb_c_csput_a
  use psb_c_base_mat_mod
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  complex(psb_spk_), intent(in)      :: val(:)
  integer(psb_ipk_), intent(in)             :: nz, ia(:), ja(:), imin,imax,jmin,jmax
  integer(psb_ipk_), intent(out)            :: info
  integer(psb_ipk_), intent(in), optional   :: gtl(:)

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='csput_a'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (.not.(a%is_bld().or.a%is_upd())) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif


  call a%a%csput(nz,ia,ja,val,imin,imax,jmin,jmax,info,gtl) 
  if (info /= psb_success_) goto 9999 

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_csput_a

subroutine psb_c_csput_v(nz,ia,ja,val,a,imin,imax,jmin,jmax,info,gtl) 
  use psb_c_mat_mod, psb_protect_name => psb_c_csput_v
  use psb_c_base_mat_mod
  use psb_c_vect_mod, only : psb_c_vect_type
  use psb_i_vect_mod, only : psb_i_vect_type
  use psb_error_mod
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  type(psb_c_vect_type), intent(inout)  :: val
  type(psb_i_vect_type), intent(inout)  :: ia, ja
  integer(psb_ipk_), intent(in)             :: nz, imin,imax,jmin,jmax
  integer(psb_ipk_), intent(out)            :: info
  integer(psb_ipk_), intent(in), optional   :: gtl(:)

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='csput_v'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (.not.(a%is_bld().or.a%is_upd())) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  
  if (allocated(val%v).and.allocated(ia%v).and.allocated(ja%v)) then
    call a%a%csput(nz,ia%v,ja%v,val%v,imin,imax,jmin,jmax,info,gtl) 
  else
    info = psb_err_invalid_mat_state_
  endif

  if (info /= psb_success_) goto 9999 

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_csput_v


subroutine psb_c_csgetptn(imin,imax,a,nz,ia,ja,info,&
     & jmin,jmax,iren,append,nzin,rscale,cscale)
  ! Output is always in  COO format 
  use psb_error_mod
  use psb_const_mod
  use psb_c_base_mat_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_csgetptn
  implicit none

  class(psb_cspmat_type), intent(in) :: a
  integer(psb_ipk_), intent(in)                  :: imin,imax
  integer(psb_ipk_), intent(out)                 :: nz
  integer(psb_ipk_), allocatable, intent(inout)  :: ia(:), ja(:)
  integer(psb_ipk_),intent(out)                  :: info
  logical, intent(in), optional        :: append
  integer(psb_ipk_), intent(in), optional        :: iren(:)
  integer(psb_ipk_), intent(in), optional        :: jmin,jmax, nzin
  logical, intent(in), optional        :: rscale,cscale

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='csget'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif


  call a%a%csget(imin,imax,nz,ia,ja,info,&
       & jmin,jmax,iren,append,nzin,rscale,cscale)
  if (info /= psb_success_) goto 9999 

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_csgetptn


subroutine psb_c_csgetrow(imin,imax,a,nz,ia,ja,val,info,&
     & jmin,jmax,iren,append,nzin,rscale,cscale)
  ! Output is always in  COO format 
  use psb_error_mod
  use psb_const_mod
  use psb_c_base_mat_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_csgetrow
  implicit none

  class(psb_cspmat_type), intent(in) :: a
  integer(psb_ipk_), intent(in)                  :: imin,imax
  integer(psb_ipk_), intent(out)                 :: nz
  integer(psb_ipk_), allocatable, intent(inout)  :: ia(:), ja(:)
  complex(psb_spk_), allocatable,  intent(inout)    :: val(:)
  integer(psb_ipk_),intent(out)                  :: info
  logical, intent(in), optional        :: append
  integer(psb_ipk_), intent(in), optional        :: iren(:)
  integer(psb_ipk_), intent(in), optional        :: jmin,jmax, nzin
  logical, intent(in), optional        :: rscale,cscale

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='csget'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif


  call a%a%csget(imin,imax,nz,ia,ja,val,info,&
       & jmin,jmax,iren,append,nzin,rscale,cscale)
  if (info /= psb_success_) goto 9999 

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_csgetrow




subroutine psb_c_csgetblk(imin,imax,a,b,info,&
     & jmin,jmax,iren,append,rscale,cscale)
  ! Output is always in  COO format 
  use psb_error_mod
  use psb_const_mod
  use psb_c_base_mat_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_csgetblk
  implicit none

  class(psb_cspmat_type), intent(in)    :: a
  class(psb_cspmat_type), intent(inout) :: b
  integer(psb_ipk_), intent(in)                  :: imin,imax
  integer(psb_ipk_),intent(out)                  :: info
  logical, intent(in), optional        :: append
  integer(psb_ipk_), intent(in), optional        :: iren(:)
  integer(psb_ipk_), intent(in), optional        :: jmin,jmax
  logical, intent(in), optional        :: rscale,cscale

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='csget'
  logical, parameter :: debug=.false.
  logical            :: append_
  type(psb_c_coo_sparse_mat), allocatable  :: acoo


  info = psb_success_
  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  if (present(append))  then 
    append_ = append
  else
    append_ = .false.
  end if

  allocate(acoo,stat=info)    
  if (append_.and.(info==psb_success_)) then 
    if (allocated(b%a)) &
         & call b%a%mv_to_coo(acoo,info)
  end if

  if (info == psb_success_) then 
    call a%a%csget(imin,imax,acoo,info,&
         & jmin,jmax,iren,append,rscale,cscale)
  else
    info = psb_err_alloc_dealloc_
  end if
  if (info == psb_success_) call move_alloc(acoo,b%a)
  if (info /= psb_success_) goto 9999 

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_csgetblk


subroutine psb_c_tril(a,l,info,diag,imin,imax,&
     & jmin,jmax,rscale,cscale,u)
  use psb_error_mod
  use psb_const_mod
  use psb_c_base_mat_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_tril
  implicit none 
  class(psb_cspmat_type), intent(in)      :: a
  class(psb_cspmat_type), intent(inout)   :: l
  integer(psb_ipk_),intent(out)           :: info
  integer(psb_ipk_), intent(in), optional :: diag,imin,imax,jmin,jmax
  logical, intent(in), optional           :: rscale,cscale
  class(psb_cspmat_type), optional, intent(inout)   :: u

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='tril'
  logical, parameter :: debug=.false.
  type(psb_c_coo_sparse_mat), allocatable  :: lcoo, ucoo

  info = psb_success_
  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  allocate(lcoo,stat=info)    
  call l%free()
  if (present(u)) then
    if (info == psb_success_) allocate(ucoo,stat=info)    
    call u%free()
    if (info == psb_success_) call a%a%tril(lcoo,info,diag,imin,imax,&
         & jmin,jmax,rscale,cscale,ucoo)
    if (info == psb_success_) call move_alloc(ucoo,u%a)
    if (info == psb_success_) call u%cscnv(info,mold=a%a)
  else
    if (info == psb_success_) then 
      call a%a%tril(lcoo,info,diag,imin,imax,&
           & jmin,jmax,rscale,cscale)
    else
      info = psb_err_alloc_dealloc_
    end if
  end if
  if (info == psb_success_) call move_alloc(lcoo,l%a)
  if (info == psb_success_) call l%cscnv(info,mold=a%a)
  if (info /= psb_success_) goto 9999 

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return


end subroutine psb_c_tril

subroutine psb_c_triu(a,u,info,diag,imin,imax,&
     & jmin,jmax,rscale,cscale,l)
  use psb_error_mod
  use psb_const_mod
  use psb_c_base_mat_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_triu
  implicit none 
  class(psb_cspmat_type), intent(in)      :: a
  class(psb_cspmat_type), intent(inout)   :: u
  integer(psb_ipk_),intent(out)           :: info
  integer(psb_ipk_), intent(in), optional :: diag,imin,imax,jmin,jmax
  logical, intent(in), optional           :: rscale,cscale
  class(psb_cspmat_type), optional, intent(inout)   :: l

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='triu'
  logical, parameter :: debug=.false.
  type(psb_c_coo_sparse_mat), allocatable  :: lcoo, ucoo


  info = psb_success_
  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  allocate(ucoo,stat=info)    
  call u%free()

  if (present(l)) then
    if (info == psb_success_) allocate(lcoo,stat=info)    
    call l%free()
    if (info == psb_success_) call a%a%triu(ucoo,info,diag,imin,imax,&
         & jmin,jmax,rscale,cscale,lcoo)
    if (info == psb_success_) call move_alloc(lcoo,l%a)
    if (info == psb_success_) call l%cscnv(info,mold=a%a)
  else
    if (info == psb_success_) then 
      call a%a%triu(ucoo,info,diag,imin,imax,&
           & jmin,jmax,rscale,cscale)
    else
      info = psb_err_alloc_dealloc_
    end if
  end if
  if (info == psb_success_) call move_alloc(ucoo,u%a)
  if (info == psb_success_) call u%cscnv(info,mold=a%a)
  if (info /= psb_success_) goto 9999 

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return


end subroutine psb_c_triu


subroutine psb_c_csclip(a,b,info,&
     & imin,imax,jmin,jmax,rscale,cscale)
  ! Output is always in  COO format 
  use psb_error_mod
  use psb_const_mod
  use psb_c_base_mat_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_csclip
  implicit none

  class(psb_cspmat_type), intent(in) :: a
  class(psb_cspmat_type), intent(inout) :: b
  integer(psb_ipk_),intent(out)                  :: info
  integer(psb_ipk_), intent(in), optional        :: imin,imax,jmin,jmax
  logical, intent(in), optional        :: rscale,cscale

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='csclip'
  logical, parameter :: debug=.false.
  type(psb_c_coo_sparse_mat), allocatable  :: acoo

  info = psb_success_
  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  allocate(acoo,stat=info)    
  call b%free()
  if (info == psb_success_) then 
    call a%a%csclip(acoo,info,&
         & imin,imax,jmin,jmax,rscale,cscale)
  else
    info = psb_err_alloc_dealloc_
  end if
 
  if (info == psb_success_) call move_alloc(acoo,b%a)
  if (info /= psb_success_) goto 9999 
  
  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_csclip


subroutine psb_c_b_csclip(a,b,info,&
     & imin,imax,jmin,jmax,rscale,cscale)
  ! Output is always in  COO format 
  use psb_error_mod
  use psb_const_mod
  use psb_c_base_mat_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_b_csclip
  implicit none

  class(psb_cspmat_type), intent(in) :: a
  type(psb_c_coo_sparse_mat), intent(out) :: b
  integer(psb_ipk_),intent(out)                  :: info
  integer(psb_ipk_), intent(in), optional        :: imin,imax,jmin,jmax
  logical, intent(in), optional        :: rscale,cscale

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='csclip'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%csclip(b,info,&
       & imin,imax,jmin,jmax,rscale,cscale)
  if (info /= psb_success_) goto 9999 

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_b_csclip




subroutine psb_c_cscnv(a,b,info,type,mold,upd,dupl)
  use psb_error_mod
  use psb_string_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_cscnv
  implicit none 
  class(psb_cspmat_type), intent(in)      :: a
  class(psb_cspmat_type), intent(inout)   :: b
  integer(psb_ipk_), intent(out)                   :: info
  integer(psb_ipk_),optional, intent(in)           :: dupl, upd
  character(len=*), optional, intent(in) :: type
  class(psb_c_base_sparse_mat), intent(in), optional :: mold


  class(psb_c_base_sparse_mat), allocatable  :: altmp
  class(psb_c_base_sparse_mat), pointer      :: mld
  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='cscnv'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)

  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  call b%free()
  if (count( (/present(mold),present(type) /)) > 1) then
    info = psb_err_many_optional_arg_
    call psb_errpush(info,name,a_err='TYPE, MOLD')
    goto 9999
  end if

  if (present(mold)) then 

#if defined(HAVE_MOLD)
    allocate(altmp, mold=mold,stat=info) 
#else
    call mold%mold(altmp,info)
#endif

  else if (present(type)) then 

    select case (psb_toupper(type))
    case ('CSR')
      allocate(psb_c_csr_sparse_mat :: altmp, stat=info) 
    case ('COO')
      allocate(psb_c_coo_sparse_mat :: altmp, stat=info) 
    case ('CSC')
      allocate(psb_c_csc_sparse_mat :: altmp, stat=info) 
    case default
      info = psb_err_format_unknown_ 
      call psb_errpush(info,name,a_err=type)
      goto 9999
    end select
  else
#if defined(HAVE_MOLD)
    allocate(altmp, mold=psb_get_mat_default(a),stat=info) 
#else
    mld = psb_get_mat_default(a)
    call mld%mold(altmp,info)
#endif
  end if

  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  end if

  
  if (present(dupl)) then 
    call altmp%set_dupl(dupl)
  else if (a%is_bld()) then 
    ! Does this make sense at all?? Who knows..
    call altmp%set_dupl(psb_dupl_def_)
  end if

  if (debug) write(psb_err_unit,*) 'Converting from ',&
       & a%get_fmt(),' to ',altmp%get_fmt()

  call altmp%cp_from_fmt(a%a, info)

  if (info /= psb_success_) then
    info = psb_err_from_subroutine_
    call psb_errpush(info,name,a_err="mv_from")
    goto 9999
  end if

  call move_alloc(altmp,b%a)
  call b%trim()
  call b%asb() 
  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_cscnv



subroutine psb_c_cscnv_ip(a,info,type,mold,dupl)
  use psb_error_mod
  use psb_string_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_cscnv_ip
  implicit none 

  class(psb_cspmat_type), intent(inout) :: a
  integer(psb_ipk_), intent(out)                   :: info
  integer(psb_ipk_),optional, intent(in)           :: dupl
  character(len=*), optional, intent(in) :: type
  class(psb_c_base_sparse_mat), intent(in), optional :: mold


  class(psb_c_base_sparse_mat), allocatable  :: altmp
  class(psb_c_base_sparse_mat), pointer      :: mld
  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='cscnv_ip'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)

  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  if (present(dupl)) then 
    call a%set_dupl(dupl)
  else if (a%is_bld()) then 
    call a%set_dupl(psb_dupl_def_)
  end if

  if (count( (/present(mold),present(type) /)) > 1) then
    info = psb_err_many_optional_arg_
    call psb_errpush(info,name,a_err='TYPE, MOLD')
    goto 9999
  end if

  if (present(mold)) then 

#if defined(HAVE_MOLD)
    allocate(altmp, mold=mold,stat=info) 
#else
    call mold%mold(altmp,info)
#endif

  else if (present(type)) then 

    select case (psb_toupper(type))
    case ('CSR')
      allocate(psb_c_csr_sparse_mat :: altmp, stat=info) 
    case ('COO')
      allocate(psb_c_coo_sparse_mat :: altmp, stat=info) 
    case ('CSC')
      allocate(psb_c_csc_sparse_mat :: altmp, stat=info) 
    case default
      info = psb_err_format_unknown_ 
      call psb_errpush(info,name,a_err=type)
      goto 9999
    end select
  else
#if defined(HAVE_MOLD)
    allocate(altmp, mold=psb_get_mat_default(a),stat=info) 
#else
    mld = psb_get_mat_default(a)
    call mld%mold(altmp,info)
#endif
  end if

  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  end if

  if (debug) write(psb_err_unit,*) 'Converting in-place from ',&
       & a%get_fmt(),' to ',altmp%get_fmt()

  call altmp%mv_from_fmt(a%a, info)

  if (info /= psb_success_) then
    info = psb_err_from_subroutine_
    call psb_errpush(info,name,a_err="mv_from")
    goto 9999
  end if

  call move_alloc(altmp,a%a)
  call a%set_asb() 
  call a%trim()
  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_cscnv_ip



subroutine psb_c_cscnv_base(a,b,info,dupl)
  use psb_error_mod
  use psb_string_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_cscnv_base
  implicit none 
  class(psb_cspmat_type), intent(in)       :: a
  class(psb_c_base_sparse_mat), intent(out) :: b
  integer(psb_ipk_), intent(out)                   :: info
  integer(psb_ipk_),optional, intent(in)           :: dupl


  type(psb_c_coo_sparse_mat)  :: altmp
  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='cscnv'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)

  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%cp_to_coo(altmp,info )
  if ((info == psb_success_).and.present(dupl)) then 
    call altmp%set_dupl(dupl)
  end if
  call altmp%fix(info)
  if (info == psb_success_) call altmp%trim()
  if (info == psb_success_) call altmp%set_asb() 
  if (info == psb_success_) call b%mv_from_coo(altmp,info)

  if (info /= psb_success_) then
    info = psb_err_from_subroutine_
    call psb_errpush(info,name,a_err="mv_from")
    goto 9999
  end if

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_cscnv_base



subroutine psb_c_clip_d(a,b,info)
  ! Output is always in  COO format 
  use psb_error_mod
  use psb_const_mod
  use psb_c_base_mat_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_clip_d
  implicit none

  class(psb_cspmat_type), intent(in)    :: a
  class(psb_cspmat_type), intent(inout) :: b
  integer(psb_ipk_),intent(out)                  :: info

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='clip_diag'
  logical, parameter :: debug=.false.
  type(psb_c_coo_sparse_mat), allocatable  :: acoo
  integer(psb_ipk_) :: i, j, nz

  info = psb_success_
  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  allocate(acoo,stat=info)    
  if (info == psb_success_) call a%a%cp_to_coo(acoo,info)
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif

  nz = acoo%get_nzeros()
  j = 0
  do i=1, nz
    if (acoo%ia(i) /= acoo%ja(i)) then 
      j = j + 1 
      acoo%ia(j)  = acoo%ia(i)
      acoo%ja(j)  = acoo%ja(i)
      acoo%val(j) = acoo%val(i)
    end if
  end do
  call acoo%set_nzeros(j)
  call acoo%trim()
  call b%mv_from(acoo)

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_clip_d



subroutine psb_c_clip_d_ip(a,info)
  ! Output is always in  COO format 
  use psb_error_mod
  use psb_const_mod
  use psb_c_base_mat_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_clip_d_ip
  implicit none

  class(psb_cspmat_type), intent(inout) :: a
  integer(psb_ipk_),intent(out)                  :: info

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='clip_diag'
  logical, parameter :: debug=.false.
  type(psb_c_coo_sparse_mat), allocatable  :: acoo
  integer(psb_ipk_) :: i, j, nz

  info = psb_success_
  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  allocate(acoo,stat=info)    
  if (info == psb_success_) call a%a%mv_to_coo(acoo,info)
  if (info /= psb_success_) then
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif

  nz = acoo%get_nzeros()
  j = 0
  do i=1, nz
    if (acoo%ia(i) /= acoo%ja(i)) then 
      j = j + 1 
      acoo%ia(j)  = acoo%ia(i)
      acoo%ja(j)  = acoo%ja(i)
      acoo%val(j) = acoo%val(i)
    end if
  end do
  call acoo%set_nzeros(j)
  call acoo%trim()
  call a%mv_from(acoo)

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_clip_d_ip


subroutine psb_c_mv_from(a,b)
  use psb_error_mod
  use psb_string_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_mv_from
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  class(psb_c_base_sparse_mat), intent(inout) :: b
  integer(psb_ipk_) :: info

  call a%free()
#if defined(HAVE_MOLD)
  allocate(a%a,mold=b, stat=info)
#else
  call b%mold(a%a,info)
#endif
  call a%a%mv_from_fmt(b,info)
  call b%free()

  return
end subroutine psb_c_mv_from


subroutine psb_c_cp_from(a,b)
  use psb_error_mod
  use psb_string_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_cp_from
  implicit none 
  class(psb_cspmat_type), intent(out)      :: a
  class(psb_c_base_sparse_mat), intent(in) :: b
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='cp_from'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  info = psb_success_
  
  call a%free()
  !
  ! Note: it is tempting to use SOURCE allocation below;
  ! however this would run the risk of messing up with data
  ! allocated externally (e.g. GPU-side data).
  !
#if defined(HAVE_MOLD)
  allocate(a%a,mold=b,stat=info)
#else
  call b%mold(a%a,info)
#endif
  if (info /= psb_success_) info = psb_err_alloc_dealloc_
  if (info == psb_success_) call a%a%cp_from_fmt(b, info)    
  if (info /= psb_success_) goto 9999 

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return
end subroutine psb_c_cp_from


subroutine psb_c_mv_to(a,b)
  use psb_error_mod
  use psb_string_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_mv_to
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  class(psb_c_base_sparse_mat), intent(inout) :: b
  integer(psb_ipk_) :: info
  
  call b%mv_from_fmt(a%a,info)

  return
end subroutine psb_c_mv_to


subroutine psb_c_cp_to(a,b)
  use psb_error_mod
  use psb_string_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_cp_to
  implicit none 
  class(psb_cspmat_type), intent(in) :: a
  class(psb_c_base_sparse_mat), intent(inout) :: b
  integer(psb_ipk_) :: info

  call b%cp_from_fmt(a%a,info)

  return
end subroutine psb_c_cp_to

subroutine psb_c_mold(a,b)
  use psb_c_mat_mod, psb_protect_name => psb_c_mold
  class(psb_cspmat_type), intent(inout)     :: a
  class(psb_c_base_sparse_mat), allocatable, intent(out) :: b
  integer(psb_ipk_) :: info
#if defined(HAVE_MOLD) 
  allocate(b,mold=a%a, stat=info)
#else
  call a%a%mold(b,info)
#endif
  
end subroutine psb_c_mold

subroutine psb_cspmat_type_move(a,b,info)
  use psb_error_mod
  use psb_string_mod
  use psb_c_mat_mod, psb_protect_name => psb_cspmat_type_move
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  class(psb_cspmat_type), intent(inout)   :: b
  integer(psb_ipk_), intent(out)                   :: info

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='move_alloc'
  logical, parameter :: debug=.false.

  info = psb_success_
  call b%free()
  call move_alloc(a%a,b%a)

  return
end subroutine psb_cspmat_type_move


subroutine psb_cspmat_clone(a,b,info)
  use psb_error_mod
  use psb_string_mod
  use psb_c_mat_mod, psb_protect_name => psb_cspmat_clone
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  class(psb_cspmat_type), intent(inout) :: b
  integer(psb_ipk_), intent(out)        :: info

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='clone'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  info = psb_success_
  call b%free()
  if (allocated(a%a)) then 
    call a%a%clone(b%a,info)
  end if
  if (info /= psb_success_) goto 9999 

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_cspmat_clone


subroutine psb_c_transp_1mat(a)
  use psb_error_mod
  use psb_string_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_transp_1mat
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a

  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='transp'
  logical, parameter :: debug=.false.


  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%transp()

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_transp_1mat



subroutine psb_c_transp_2mat(a,b)
  use psb_error_mod
  use psb_string_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_transp_2mat
  implicit none 
  class(psb_cspmat_type), intent(in)  :: a
  class(psb_cspmat_type), intent(inout) :: b

  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='transp'
  logical, parameter :: debug=.false.


  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  call b%free()
#if defined(HAVE_MOLD)
  allocate(b%a,mold=a%a,stat=info)
#else
  call a%a%mold(b%a,info)
#endif
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    goto 9999
  end if
  call a%a%transp(b%a)    

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_transp_2mat


subroutine psb_c_transc_1mat(a)
  use psb_error_mod
  use psb_string_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_transc_1mat
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a

  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='transc'
  logical, parameter :: debug=.false.


  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%transc()

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_transc_1mat



subroutine psb_c_transc_2mat(a,b)
  use psb_error_mod
  use psb_string_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_transc_2mat
  implicit none 
  class(psb_cspmat_type), intent(in)    :: a
  class(psb_cspmat_type), intent(inout) :: b

  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='transc'
  logical, parameter :: debug=.false.


  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  call b%free()
#if defined(HAVE_MOLD)
  allocate(b%a,mold=a%a,stat=info)
#else
  call a%a%mold(b%a,info)
#endif
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    goto 9999
  end if
  call a%a%transc(b%a)    

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_transc_2mat


subroutine psb_c_asb(a,mold)
  use psb_c_mat_mod, psb_protect_name => psb_c_asb
  use psb_error_mod
  implicit none 

  class(psb_cspmat_type), intent(inout) :: a   
  class(psb_c_base_sparse_mat), optional, intent(in) :: mold
  class(psb_c_base_sparse_mat), allocatable :: tmp
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='c_asb'

  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%asb()
  if (present(mold)) then 
    if (.not.same_type_as(a%a,mold)) then 
      allocate(tmp,mold=mold)
      call tmp%mv_from_fmt(a%a,info)
      call a%a%free()
      call move_alloc(tmp,a%a)
    end if
  end if
  

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_asb

subroutine psb_c_reinit(a,clear)
  use psb_c_mat_mod, psb_protect_name => psb_c_reinit
  use psb_error_mod
  implicit none 

  class(psb_cspmat_type), intent(inout) :: a   
  logical, intent(in), optional :: clear
  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='reinit'

  call psb_erractionsave(err_act)
  if (a%is_null()) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  if (a%a%has_update()) then 
    call a%a%reinit(clear)
  else
    info = psb_err_missing_override_method_
    call psb_errpush(info,name)
    goto 9999
  endif

  call psb_erractionrestore(err_act)
  return


9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_reinit




! == ===================================
!
!
!
! Computational routines
!
!
!
!
!
!
! == ===================================


subroutine psb_c_csmm(alpha,a,x,beta,y,info,trans) 
  use psb_error_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_csmm
  implicit none 
  class(psb_cspmat_type), intent(in) :: a
  complex(psb_spk_), intent(in)    :: alpha, beta, x(:,:)
  complex(psb_spk_), intent(inout) :: y(:,:)
  integer(psb_ipk_), intent(out)            :: info
  character, optional, intent(in) :: trans
  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='psb_csmm'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%spmm(alpha,x,beta,y,info,trans) 
  if (info /= psb_success_) goto 9999 
  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_csmm


subroutine psb_c_csmv(alpha,a,x,beta,y,info,trans) 
  use psb_error_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_csmv
  implicit none 
  class(psb_cspmat_type), intent(in) :: a
  complex(psb_spk_), intent(in)    :: alpha, beta, x(:)
  complex(psb_spk_), intent(inout) :: y(:)
  integer(psb_ipk_), intent(out)            :: info
  character, optional, intent(in) :: trans
  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='psb_csmv'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%spmm(alpha,x,beta,y,info,trans) 
  if (info /= psb_success_) goto 9999 
  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_csmv

subroutine psb_c_csmv_vect(alpha,a,x,beta,y,info,trans) 
  use psb_error_mod
  use psb_c_vect_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_csmv_vect
  implicit none 
  class(psb_cspmat_type), intent(in)   :: a
  complex(psb_spk_), intent(in)        :: alpha, beta
  type(psb_c_vect_type), intent(inout) :: x
  type(psb_c_vect_type), intent(inout) :: y
  integer(psb_ipk_), intent(out)                 :: info
  character, optional, intent(in)      :: trans
  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='psb_csmv'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  if (.not.allocated(x%v)) then 
    info = psb_err_invalid_vect_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  if (.not.allocated(y%v)) then 
    info = psb_err_invalid_vect_state_
    call psb_errpush(info,name)
    goto 9999
  endif


  call a%a%spmm(alpha,x%v,beta,y%v,info,trans) 
  if (info /= psb_success_) goto 9999 
  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_csmv_vect



subroutine psb_c_cssm(alpha,a,x,beta,y,info,trans,scale,d) 
  use psb_error_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_cssm
  implicit none 
  class(psb_cspmat_type), intent(in) :: a
  complex(psb_spk_), intent(in)    :: alpha, beta, x(:,:)
  complex(psb_spk_), intent(inout) :: y(:,:)
  integer(psb_ipk_), intent(out)            :: info
  character, optional, intent(in) :: trans, scale
  complex(psb_spk_), intent(in), optional :: d(:)
  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='psb_cssm'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%spsm(alpha,x,beta,y,info,trans,scale,d) 
  if (info /= psb_success_) goto 9999 

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_cssm


subroutine psb_c_cssv(alpha,a,x,beta,y,info,trans,scale,d) 
  use psb_error_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_cssv
  implicit none 
  class(psb_cspmat_type), intent(in) :: a
  complex(psb_spk_), intent(in)    :: alpha, beta, x(:)
  complex(psb_spk_), intent(inout) :: y(:)
  integer(psb_ipk_), intent(out)            :: info
  character, optional, intent(in) :: trans, scale
  complex(psb_spk_), intent(in), optional :: d(:)
  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='psb_cssv'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%spsm(alpha,x,beta,y,info,trans,scale,d) 

  if (info /= psb_success_) goto 9999 

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_cssv


subroutine psb_c_cssv_vect(alpha,a,x,beta,y,info,trans,scale,d) 
  use psb_error_mod
  use psb_c_vect_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_cssv_vect
  implicit none 
  class(psb_cspmat_type), intent(in) :: a
  complex(psb_spk_), intent(in)         :: alpha, beta
  type(psb_c_vect_type), intent(inout)   :: x
  type(psb_c_vect_type), intent(inout)   :: y
  integer(psb_ipk_), intent(out)               :: info
  character, optional, intent(in)    :: trans, scale
  type(psb_c_vect_type), optional, intent(inout)   :: d
  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='psb_cssv'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  if (.not.allocated(x%v)) then 
    info = psb_err_invalid_vect_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  if (.not.allocated(y%v)) then 
    info = psb_err_invalid_vect_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  if (present(d)) then 
    if (.not.allocated(d%v)) then 
      info = psb_err_invalid_vect_state_
      call psb_errpush(info,name)
      goto 9999
    endif
    call a%a%spsm(alpha,x%v,beta,y%v,info,trans,scale,d%v) 
  else
    call a%a%spsm(alpha,x%v,beta,y%v,info,trans,scale) 
  end if

  if (info /= psb_success_) goto 9999 

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_cssv_vect

function psb_c_maxval(a) result(res)
  use psb_c_mat_mod, psb_protect_name => psb_c_maxval
  use psb_error_mod
  use psb_const_mod
  implicit none 
  class(psb_cspmat_type), intent(in) :: a
  real(psb_spk_)         :: res


  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='maxval'
  logical, parameter :: debug=.false.

  call psb_get_erraction(err_act)
  info = psb_success_
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  res = a%a%maxval()
  return


9999 call psb_error_handler(err_act)

  return

end function psb_c_maxval

function psb_c_csnmi(a) result(res)
  use psb_c_mat_mod, psb_protect_name => psb_c_csnmi
  use psb_error_mod
  use psb_const_mod
  implicit none 
  class(psb_cspmat_type), intent(in) :: a
  real(psb_spk_)         :: res

  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='csnmi'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_get_erraction(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  res = a%a%spnmi()
  return


9999 call psb_error_handler(err_act)

  return

end function psb_c_csnmi


function psb_c_csnm1(a) result(res)
  use psb_c_mat_mod, psb_protect_name => psb_c_csnm1
  use psb_error_mod
  use psb_const_mod
  implicit none 
  class(psb_cspmat_type), intent(in) :: a
  real(psb_spk_)         :: res

  integer(psb_ipk_) :: err_act, info
  character(len=20)  :: name='csnm1'
  logical, parameter :: debug=.false.

  call psb_get_erraction(err_act)
  info = psb_success_
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  res = a%a%spnm1()
  return


9999 call psb_error_handler(err_act)

  return

end function psb_c_csnm1


function psb_c_rowsum(a,info) result(d)
  use psb_c_mat_mod, psb_protect_name => psb_c_rowsum
  use psb_error_mod
  use psb_const_mod
  implicit none 
  class(psb_cspmat_type), intent(in) :: a
  complex(psb_spk_), allocatable     :: d(:)
  integer(psb_ipk_), intent(out)               :: info

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='rowsum'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  info = psb_success_
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  allocate(d(max(1,a%a%get_nrows())), stat=info)
  if (info /= psb_success_) goto 9999
  call a%a%rowsum(d)

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end function psb_c_rowsum

function psb_c_arwsum(a,info) result(d)
  use psb_c_mat_mod, psb_protect_name => psb_c_arwsum
  use psb_error_mod
  use psb_const_mod
  implicit none 
  class(psb_cspmat_type), intent(in) :: a
  real(psb_spk_), allocatable           :: d(:)
  integer(psb_ipk_), intent(out)       :: info

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='arwsum'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  info = psb_success_
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  allocate(d(max(1,a%a%get_nrows())), stat=info)
  if (info /= psb_success_) goto 9999

  call a%a%arwsum(d)

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end function psb_c_arwsum

function psb_c_colsum(a,info) result(d)
  use psb_c_mat_mod, psb_protect_name => psb_c_colsum
  use psb_error_mod
  use psb_const_mod
  implicit none 
  class(psb_cspmat_type), intent(in) :: a
  complex(psb_spk_), allocatable         :: d(:)
  integer(psb_ipk_), intent(out)       :: info

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='colsum'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  info = psb_success_
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  allocate(d(max(1,a%a%get_ncols())), stat=info)
  if (info /= psb_success_) goto 9999

  call a%a%colsum(d)

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end function psb_c_colsum

function psb_c_aclsum(a,info) result(d)
  use psb_c_mat_mod, psb_protect_name => psb_c_aclsum
  use psb_error_mod
  use psb_const_mod
  implicit none 
  class(psb_cspmat_type), intent(in) :: a
  real(psb_spk_), allocatable           :: d(:)
  integer(psb_ipk_), intent(out)       :: info

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='aclsum'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)
  info = psb_success_
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  allocate(d(max(1,a%a%get_ncols())), stat=info)
  if (info /= psb_success_) goto 9999

  call a%a%aclsum(d)

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end function psb_c_aclsum


function psb_c_get_diag(a,info) result(d)
  use psb_c_mat_mod, psb_protect_name => psb_c_get_diag
  use psb_error_mod
  use psb_const_mod
  implicit none 
  class(psb_cspmat_type), intent(in) :: a
  complex(psb_spk_), allocatable         :: d(:)
  integer(psb_ipk_), intent(out)       :: info

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='get_diag'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif
  allocate(d(max(1,min(a%a%get_nrows(),a%a%get_ncols()))), stat=info)
  if (info /= 0) then 
    info = psb_err_alloc_dealloc_ 
    call psb_errpush(info,name)
    goto 9999
  end if
  call a%a%get_diag(d,info)
  if (info /= psb_success_) goto 9999

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end function psb_c_get_diag


subroutine psb_c_scal(d,a,info,side)
  use psb_error_mod
  use psb_const_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_scal
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  complex(psb_spk_), intent(in)              :: d(:)
  integer(psb_ipk_), intent(out)                    :: info
  character, intent(in), optional :: side

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='scal'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%scal(d,info,side=side)
  if (info /= psb_success_) goto 9999

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_scal


subroutine psb_c_scals(d,a,info)
  use psb_error_mod
  use psb_const_mod
  use psb_c_mat_mod, psb_protect_name => psb_c_scals
  implicit none 
  class(psb_cspmat_type), intent(inout) :: a
  complex(psb_spk_), intent(in)              :: d
  integer(psb_ipk_), intent(out)                    :: info

  integer(psb_ipk_) :: err_act
  character(len=20)  :: name='scal'
  logical, parameter :: debug=.false.

  info = psb_success_
  call psb_erractionsave(err_act)
  if (.not.allocated(a%a)) then 
    info = psb_err_invalid_mat_state_
    call psb_errpush(info,name)
    goto 9999
  endif

  call a%a%scal(d,info)
  if (info /= psb_success_) goto 9999

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_c_scals



